- published: 03 Oct 2015
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The Great Serpent Mound is a 1,348-foot (411 m)-long, three-foot-high prehistoric effigy mound located on a plateau of the Serpent Mound crater along Ohio Brush Creek in Adams County, Ohio. Maintained within a park by the Ohio Historical Society, it has been designated a National Historic Landmark by the United States Department of Interior. The Serpent Mound of Ohio was first reported from surveys by Ephraim Squire and Edwin Davis in their historic volume Ancient Monuments of the Mississippi Valley, published in 1848 by the newly founded Smithsonian Museum.
Researchers have attributed construction of the mound to three different prehistoric indigenous cultures. Although it was once thought to be Adena in origin, now based on the use of more advanced technology, including carbon dating and evidence from 1996 studies, many scholars now believe that members of the Fort Ancient culture built it about 1070 CE (plus or minus 70 years). There are still anomalies to be studied. Serpent Mound is the largest serpent effigy in the world.
A mound is a general term for an artificial heaped pile of earth, gravel, sand, rocks, or debris. The most common use is in reference to natural earthen formation such as hills and mountains, particularly if they appear artificial. The term may also be applied to any rounded area of topographically higher elevation on any surface. Artificial mounds have been created for a variety of reasons throughout history, including ceremonial (platform mound), burial (tumulus), and commemorative purposes (e.g. Kościuszko Mound).
In the archaeology of the United States and Canada, the term "mound" has specific and technical connotations. In this sense, a mound is a deliberately constructed elevated earthen structure or earthwork, intended for a range of potential uses. In European and Asian archaeology, the word "tumulus" may be used as a synonym for an artificial hill, particularly if the hill is related to particular burial customs.
While the term "mound" may be applied to historic constructions, most mounds in the United States are prehistoric earthworks, built by Native American peoples. Native Americans built a variety of mounds, including flat-topped pyramids or cones known as platform mounds, rounded cones, and ridge or loaf-shaped mounds. Some mounds took on unusual shapes, such as the outline of cosmologically significant animals. These are known as effigy mounds. Some mounds, such as a few in Wisconsin, have rock formations, or petroforms within them, on them, or near them.